A Current of 250

question 62

Multiple Choice

A current of 250. A flows for 24.0 hours at an anode where the reaction occurring is
Mn²⁺(aq) + 2H₂O(l)  MnO₂(s) + 4H⁺(aq) + 2e^-
What mass of MnO₂ is deposited at this anode?

• A) 19.5 kg
• B) 12.9 kg
• C) 4.87 kg
• D) 2.43 kg
• E) none of the above

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Definitions:

Donald Hebb

Canadian psychologist best known for his work in the field of neuropsychology and his proposal that neurons that fire together, wire together.

William James

A pioneering American psychologist and philosopher known for his theories in pragmatism and functionalism.

Cognitive Psychologist

A type of psychologist who studies how people perceive, think, understand, and remember information, often focusing on processes such as learning, memory, and problem-solving.

Humanist

Pertains to a philosophical stance that emphasizes the value and agency of human beings, individually and collectively, often prioritizing human welfare, values, and dignity.